stoddard



W. W. STODDARD. MACHINE FOR ROUGH TURNING LAST BLOCKS.

APPLICATION FILED MAY 21, 1915.

1,193,944. Patented Aug. 8, 1916.

4 SHEETS-SHEET I.

W. W. STODDARD.

MACHINE FOR ROUGH TURNING LAST BLOCKS.

APPLICATION FILED MAY 21. 19.15-

Patented Aug. 8

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I 6 0%: I i t G lil'o'z mung W. W. STODDARD.

MACHINE FOR ROUGH TURNING LAST BLOCKS.

APPLICATION FILED MAY 27. 1915.

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W. W. STODDARD.

MACHINE FOR ROUGH TURNING LAST BLOCKS.

APPLICATION FIL'ED MAY 21, 1915.

l 1 93,944. Patented Aug. 8, 1916.

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WALLACE W. STODDARD, F BINGI-IAM, MAINE.

MACHINE FOR ROUGH-TURNING LAST-BLOCKS.

Application filed May 27, 1915.

To all whom it may concern:

Be it known that I, VVALLAGE lVALDRoN Frroonann, a citizen of the United States, residing at Bingham, in the county of Somerset and State of Maine, have invented certain new and useful Improvements in Machines for Rough-Turning Last-Blocks, of which the following is a specification.

This invention relates to certain new and useful improvements in machines for roughturning last blocks of that general type in which is employed a pattern block, and it has for its objects among others to provide an improved machine of this general character by which last blocks will be made more uniform, manufactured more rapidly, and the machine less expensive to maintain.

I aim further at improvements in the details of construction whereby the machine is rendered more efficient in use, durable, less liable to get out of repair, and in which the parts are readily assembled, and easy of access for the purpose of repairs.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in Which Figure 1 is a front elevation of the machine embodying my present improvement. Fig. 2 is an end view of the same. Fig. 3 is a top plan with parts removed. Fig. 4: is a detail in end elevation with parts in the distance omitted in order to better illustrate the invention. Fig. 5 is a detail in plan with portions broken away showing the secondary clutch rod, the clutch mechanism, and the controlling shaft. Fig. 6 is a detail partly in longitudinal section through the air cylinder. Fig. 7is a detail in elevation of the cam block. Fig. 8 is a sectional detail on the line 88 of Fig. 1 loo-king in the direction of the arrows. Fig. 9 is a face view of the driving pulley and primary clutch. Fig. 10 is a section on the line 10-10 of Fig. 9 looking in the direction of the arrows. Fig. 11 is a detail, in plan, with a portion in section showing the tail spindle and its operating means. Fig. 12 is a fragmentary detail looking in the direc- Specification of Letters Patent.

- Patented Aug. 8, 1916.

Serial No. 30,713.

tion of the arrow in Fig. 11, with portions removed. Fig. 13 is a vertical section with parts in elevation, the section being taken as on the line 1313 of Fig. 1. Fig. 14: is a face view of Fig. 13.

Like numerals of reference indicate like parts throughout the several views.

Referring to the drawings, 1 designates the frame of the machine supported upon legs 2 suitably braced, as at 3, to give the requisite strength.

4- is the drive shaft mounted in suitable bearings and fast on said shaft is the drive sprocket 5 over which passes the drive chain 6 which engages a sprocket wheel 7 on the swing shaft 8 and a sprocket wheel 9 on the swing shaft 10. The model wheel 11 has its shaft 11 mounted in hearings in the model wheel arm 12 depending from the depending member 13 in which it is pivoted upon a horizontal pivot 14, see Fig. l. The pivot wheel is made adjustable in order to adapt it to blocks of different forms, and, as shown in Fig. 13, this adjustment is brought about by. means of a screw 12 bearing against a projection or the like 12 so that the proper adjustment of the model wheel may be made.

15 is a drive pulley on the shaft 4 over which passes a belt 16 for driving the machine. lVith the exception of the cutter head which is independent of the rest of the machine, all power is transmitted to the ma chine by means of the belt 16 through the pulley 15 and the clutch mechanism soon to be described.

17 is a driving belt for the cutter head shaft. It passes around the cutter head pulley 18, asseen in Figs. 1 and 3 and derives its power from any suitable source. The shaft 19 carrying this pulley is mounted in suitable bearings 20 and 21 with ring oiling boXes.

Depending from the cross portion 1 of the frame is a bracket or support 22 in which works the screw 2% provided with an operating handle 25 and the centering point 26 between which and the stock 27 the model block 28 is held, as indicated by dotted lines in Fig. 1.

29, see Fig. 8, is a spring, preferably a coil spring, of which there may be one or more, the tension of which may be readily adjusted by suitable means, as a set screw 30 or the like and bearing against the face 31 of the gib or guide member 32. lhese springs serve to give the necessary tension to force the model wheel 11 against the model to insure constant contact.

The shaft 27 is mounted in suitable hearing 33 on one of the uprights of the frame and upon its extended end carries a sprocket 3 1 around which passes the chain 6, as seen clearly in Fig. 1, this being the same chain that passes over the sprockets 5 and 9 on the shafts f and 10 respectively. This chain and sprocket rotate the model 28 of the last block.

The shaft 10 is extended at one end and is provided with a transmission sprocket 35 and a transmission gear 36, as seen clearly in Figs. 1 and 3. The gear 36 meshes with a gear 37 on a screw shaft 38 which is provided at its inner end with an adjustable collar 39 and at its outer end with a sprocket 40 over which and the sprocket 35 there passes a sprocket chain 41, as seen clearly in Fig. 3. The screw shaft 38 engages a threaded nut 42 on the traveling slide 13, as seen best in Fig. 5.

4:4: is a sliding clutch carrying a clutch member 45 engageable with a corresponding member 46 on the hub of the gear 37, and a clutch member 47 cooperating with a cooperating member 48 on the hub of the sprocket wheel 40. Connected to this slidable clutch member 14: is an arm 49 which is carried by the clutch rod 50, all as seen clearly in Fig. 5. On the rod 50 is a cam member 51 having a depression 52, as seen clearly in Figs. 5 and 7, and co'ciperating with this is a lever 53 carried by a connecting rod 54, as seen best in Fig. 2, which lever is adapted to automatically operate a latch member soon to be described.

55 is an adjustable collar on the connecting rod 50. On this rod 50 is another adjustable collar 56 and a further adjustable collar 57 for manual movement, with which latter engages a lever arm 58 fulcrumed at 59 and having an operating handle 60, all as shown in Fig, 5.

60". is an arm carried by the slide 43 and ,operable between the collar-s 55 and 56 which. latter may be adjusted to and from each other to limit the to and fro movement of the slide. The slide 13 has the depending portions 61 and 62, as seen best in Fig.

5, which form bearings for the tubular member 63 in which the shaft 10 is received, the tubular member 63 and the slide L3 being mounted to reciprocate freely upon the shaft 10, as will soon be described.

Referring to Figs. 2- and 3, 64: is a crank disk on the shaft 4, to the crank pin 65 of which is pivotally connected a connecting rod 66 which, in turn, is connected, as at 67, with the slide 63 on the push-out bar 69 which is mounted to slide in suitable bearings and is provided with a depression 70,

as seen clearly in Figs. 2 and 6.

In order to prevent shock as well as noise and to compensate for any jar that otherwise might occur, I provide a shock ab sorber which consists of an air cylinder 71 afiixed in any suitable manner to the frame of the machine and in which works a piston 72, the piston rod 73 of which is connected in any suitable manner, as by the arm 7%, with the push-out bar 69, as' seen in Figs. 2 and 6. This air cylinder may be arranged in any suitable position, in the present instance being shown as suspended be neath the bar 69 by the hangers or the like 75. V This disposition of the cylinder, however, is not essential and it may be otherwise positioned.

The driving pulley 15 also constitutes a primary clutch, the construction of which is clearly seen in Figs. 9 and 10. The pulley rotates freely upon the shaft 4: and is held from sliding to the right by a collar 76 atlixed to the shaft by a set screw or the like 77. This pulley is held from sliding in the other direction by means of the clutch member 78 which is keyed to the shaft 1, as seen at 79. The hub 80 of the pulley 15 is formed with a depression 81 into which the clutch member 78 fits. This clutch member carries the latches 82 and 83 rigid on a pin 84, but mounted to oscillate on said pin with reference to the clutch member 78. It is to be noted that the latch 82 is on the outside of the clutch member 78 and extends be yond the hub, while the latch 83 is disposed within ,a slot or chamber 85 in the clutch member 78, as seen clearly in Figs. 9 and 10. These latches are held in the machine by means of a spring 86, one end of which is secured, as at 87, by a pin or the like, to the clutch member 7 8 and the other end to the latch member 82 by a pin or the like, as shown at 88,

The pulley 15, during the operation of the machine, is revolved continuously in the direction of the arrow seen thereon in Fig. 9, by means of the belt 16, and when the machine is at rest this pulley rotates freely upon its shaft, the clutch member 73 and the sprocket 5 being fast thereon, this sprocket, in turn, driving, by means of chain 6, said shaft 10 and also the model shaft. To the shaft 10 is keyed a sprocket wheel 89 by means of a sliding key 90 so as to rotate with said shaft and also to slide along it with the swing and the gib 32. This sprocket by means of chain 91 drives the sprocket 92 on the shaft 93 which rotates the block 94: which is to be operated upon. This block is held between the head stock 95 and the tail stock 96, as indicated by dotted lines in Fig. 1.

The gib 32 holds and guides the traveling slide 43, as seen best in Fig. 8.

The block to be turned is supported in a swinging carrier of which 97 are adjustable slide holding centers, 98 rods for supporting the same and 99 the depending members.

100 is the cutter head, of which 101 are the cutting knives which may be of any well known or approved form suitable for the purpose.

Mounted in a suitable support, as 102, see Figs. 2 and 3, is a shaft 103 having a portion 10% constituting a pawl to engage the clutch latch 82, and an arm 105 carrying at its free end a pawl operating roll 106 for cooperation with the notch in the push-out bar, as will be best understood upon reference to Figs. 2 and 3.

The tail stock 96 is slidably mounted in the member 107 of the frame and is actuatedby means of the lever 108 pivotally connected therewith, as at 109, and, in turn, pivoted, as at 110, at one end to a suitable fixed member 111. This lever carries a pivoted springactuated pawl 112, as seen in Fig. 11, for cooperation with the teeth 113 of a segment 11 1 suitably fixed in position, the pawl being controlled by a thumb-piece 115 adjacent to the handle 116 of the lever 108, as seen clearly in Fig. 11. The tail stock has its connecting member 109 mounted in a block 117 which is slidable in a slot 118 in the lever 108 which permits of a limited amount of play in the lever, and the tail stock being carried by this block all danger of binding is prevented.

119 is a lever fulcrumed at 120 in the hanger or support 121 and to which the rod 54. is pivotally connected, at at 122, see Fig. 2, it being understood that by this means the lever 53 and the latch 123 are operated together. The lever 119 has an elongated slot 121 in which slides the block 125 to which the latch 123 is pivotally connected, as at 126, the pivot thereof being carried in the ear or the like 127, as seen clearly in Fig. 2.

102 is a journal attached to the top of the frame of the machine carrying the shaft 103. The shaft 103 has rigidly keyed to it the members 104: and 105, so that any movement imparted to the member 105 will move the member 104 in like manner.

70 is a depression in the bar 69, so that different positions of said bar 69 will result in different heights for the roll 106, thus varying the height of the pawl 104; to engage and disengage the clutch member 82. As, for example, when the machine is running, the bar 69 is back and the roll 106 rests on the high part, holding the pawl 104 out of the way of the clutch member 82, but when the operator wishes to stop the machine he allows the latch 103, pivotally connected to the bar 69, to fall engaging the slide 58 which, consequently, throws the bar 69 ahead. As the bar 69 moves ahead, the depression 70 comes under the roll 106, allow ing it to drop. The roll 106 in dropping carries down with it the lever 105 which, in turn, carries down the pawl 10% to a position where it will come into contact with the clutch member 82 when it rotates to that point. When the member 82 is brought to rest, the clutch will disengage, stopping the machine.

The rod 50 is the rod which operates the other clutch 44 at the other end of the machine. It also carries the piece 51 which has the depression 52 cut in it. Either on the high portion of this piece or in the depression, depending whether the clutch is in or out, rests one end of the lever 53. To this lever 53 is connected a rod also connected to the lever 119 in such a way that when the lever 53 lifts, it will also lift 119 or vice versa. Now when the machine is in operation, the end of the lever 53 rests on the high part of the piece 51, thus, by means of the rod 54, holding the lever 119 up which, in

turn, holds up the latch 123 out of the way of the slide 58 which is continually sliding back and forth. lVhcn the machine is to be brought to rest manually, the operator moves the lever 59 which is connected to the rod 50 by the yoke and the collar which move the rod 50 enough so that end of the lever 53 drops into the depression 52. This, by means of the rod 5 1, also allows the lever 119 to drop bringing down the latch 123 into a position where the slide 58 will engage it. Vhen the slide 58 engages it, it necessarily carries it forward and as the latch 123 is pivotally connected to the pushout bar 69, this bar goes forward also until, as mentioned above, the roll 106 drops, thus disengaging the first-mentioned clutch and stopping the machine.

In regard to the elongated slot in the lever 119. As the latch 123 is pivotally connected to the pushout bar 69 which, when the machine is to be brought to rest, slides ahead and as the lever 119 which lifts and lowers this latch is pivotally connected to the frame of the machine, it follows that the latch 123 will be carried ahead with the bar 69 while the lever 119 cannot move laterally. There fore, some means must be employed so that these may have free movement as stated and at the same time be controlled by each other. This is effected by means of the piece 126 sliding in the slot in the lever 119, so that in no matter what position the bar 69 is the lever 119 will always lift the latch 1 3.

The lever 58 comes above the whole machine with the exception of the lever 119. This lever is rigidly keyed to the rod 58, 2, which, in turn, is rigidly keyed to the yoke 50 on the rod 50, giving this latter rod a lateral movement as desired, thus engaging-or disengaging the clutch and moving the piece 51 controlling the levers and 119 operating the other clutch.

With the parts constructed and arranged substantially as hereinbefore described, the operation, briefly stated, is as follows :the operator stands at the left and at the front of the machine, in Fig. 1. The model last block is inserted between the members 26 and 27 as indicated by dotted lines at 28. The block of wood from which the last is to be cut is inserted between the head stock 95 and the tail stock 96, as indicated by dotted lines at the upper portion of Fig. 1. That portion of the machine in which the block 94 is inserted swings on the tubular member 63 and the lower part below said shaft has attached to it the model wheel 11, as before described. Back of that portion of the machine to which the model wheel 11 is attached are the heavy spiral springs 29 before referred to and seen in Figs. 1 and 8, which tend to force the wheel outward and the block of wood from which the last is to be cut, inward toward the knives 101 of the rotary cutter head 100.

When the machine is to be started, the operator depresses the lever 119 which raises the latch 53 from the block 51 on the shaft 50. The same movement of this lever also disengages the latch 123 from the sliding block 58, allowing the bar 69 to be forced back by means of the heavy spiral springs, raising the levers 104 and 105, by the depression or notch 70 of the said bar 69. The member 104 disengages the latch 53, allowing the clutch 78 in the pulley 15 to be thrown into operation, starting the whole machine and rotating the parts including the block of wood. The carriage remains stationary.

To start the carriage the operator determines in which direction he wishes the carriage to pass, either to the right or to the left, and moves the lever 119 in the direction which he desires the carriage to move. This forces the shaft 50 which is connected with the arm 49 carrying the clutch member 6L4: so that the clutch is thrown into engagement with the sprocket l0 or the gear 37, according to the direction in which the lever is moved and in which it is desired that the carriage shall pass. This causes the screw of the shaft 38, passing through the nut 12, to move the carriage 13 to the right or left and in this movement the model wheel 11 passes along and over the model last block 28 which is at all times held firmly in place against the block by the spiral springs 29 and this, in turn, forces the block of wood 9iagainst the rotating knives 101 of the cutter head 100 and the latter produces a last block in the exact form of the model block 28. When the carriage 43 has passed in the direction desired as far as is necessary to complete the cutting of the block, the arm 60 comes in contact with the collar 55 or 56 on the shaft 50, according to the direction in which the carriage is traveling, thereby causing the shaft or rod 50 to be moved endwise, disengaging the clutch 14: from its engagement with the sprocket 10 or the gear 37, as the case may be, and at the same time allowing the latch 53 to drop into the depression 52 in the cam member 51 and also allowing the latch 123 to drop so as to engage the sliding block 68, thereby forcing the sliding rod 69 against an adjacent portion of the carriage, pressing the carriage outward, allowing the roller 106 to drop into the depression 70 in the sliding member 69, thus allowing the arm 10 1 to come into contact with the latch 82, thus disengaging the clutch of the pulley 15. This places the machine in the position in which it was when it was started in operation.

It is to be noted that when the machine is to be started, the lever 119 being depressed, the latch 53 is raised, allowing the bar 69 to be forced back by means of the springs. This wedges the roller 106 up, as seen in Fig. 2. As the members 104: and 105 are rigid with respect to each other on the shaft 103, it follows that when the member 106 and its arm 105 are forced up, the member 104 must necessarily be forced up therewith. As the contact of the latch 53 on the member 10 1 has disengaged the latch 83 from the depression 85 and also holds it there against the spring 86, it follows that if this contact is broken the spring 86 will pull the latch 82 forward against the inside clepression in the pulley in which position it will engage within the depression 85 when it rotates to that point. As a positive connection is thus made between the constantly rotating pulley 15 and the clutch member 7 8, this will cause the driving shaft 4 to rotate and start the machine. When the latch 104: is again lowered it will be in a position where the clutch latch 53 will engage it and thus force the latch 83 out of the depression 85 and allow the same to turn once more 110 freely about the shaft 4.

WVhen the block has been turned to the desired shape, it is removed and another block 9% placed in position. The model block 28 remains in position until all the work is 115 completed or until it is desired to turn another form of last, when the block 28 is removed and another model block of the desired shape substituted therefor.

Modifications in detail may be resorted 120 to without departing from the spirit of the invention or sacrificing any of its advantages.

What is claimed as new is 1. In a machine of the class described, a pulley, a clutch member having a depression, a latch movable therein, said pulley being freely rotatable upon its shaft and said clutch member keyed to said shaft, a pushout bar having a depression, means for 00- 1530 operation with the last-named depression, a pawl movable therewith, means cooperating with said pawl, and means cooperating with said latch to allow the clutch to be thrown into operation.

2. In a machine of the class described, a driving pulley, a clutch member fast on the shaft thereof, a clutch latch carried by said member, a shaft having a portion constituting a pawl to engage said clutch latch, an arm, a pawl operating roll carried by the free end of said arm, a push-out bar having a notch to cooperate with said roll, a slidable member, and a bar engageable therewith to be moved to cause said roll to engage said notch and to allow said pawl to contact with said clutch member.

3. In a machine of the class described, a pulley, a clutch member, said pulley being freely rotatable upon its shaft and said clutch member keyed to said shaft, said clutch member having a depression, a pivotally mounted latch movable in said depression, a latch member extended beyond said clutch member and carrying a pin extending into said depression, a spring acting on said latches, a pawl for cooperation with the extended latch, and means for. actuating said pawl to cause it to move'said latch member and disengage the clutch from the pulley.

4. In a machine of the class described, a pulley, a clutch member, said pulley being freely rotatable upon its shaft and said clutch member keyed to said shaft, said clutch member having a depression, a pivotally mounted latch movable in said depression, a latch member extended beyond said clutch member and carrying a pin extending into said depression, a spring acting on said latches, a pawl for cooperation with the extended latch, a push-out bar having a depression, means for moving said push-out bar, a movably mounted member carrying a roll for cooperation with said depression, and a pawl movable with said member for cooperation with the extended latch.

5. In a machine of the class described, a pulley, a clutch member, said pulley being freely rotatable upon its shaft and said clutch member keyed to said shaft, said clutch member having a depression, a pivotally mounted latch movable in said depression, a latch member extended beyond said clutch member and carrying a pin extending into said depression, a spring acting on said latches, a pawl for-cooperation with the extended latch, a push-out bar having a depression, means for moving said push-out bar, a movably mounted member carrying a roll for cooperation with said depression, a pawl movable with said memher for cooperation with the extended latch, a clutch, and a reciprocatory rod connected with one member of said clutch and having a depression, a lever for cooperation with said depression, a slide, a gravitating lever and a latch controlled thereby to be brought into the path of said slide to move said push-out bar.

In testimony whereof I afix my signature in presence of two witnesses.

WALLACE W. STODDARD.

Witnesses:

LEON IV. GooDRIoH, 7. B. Goonnrcn;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

